Mounjaro UK Dose Tracking App: a Weekly Workflow That Works

If you're using Mounjaro (tirzepatide) in the UK, the challenge isn't the pen—it's the rhythm. This Mounjaro UK dose tracking app guide covers the UK dose ladder, missed-dose rules and storage, then shows a simple way to stay on track each week.

Who it's for in the UK

Mounjaro is the brand for tirzepatide, a once-weekly injection. In the UK it may be prescribed for weight management in eligible adults and for type 2 diabetes. Your clinician will confirm eligibility and duration.

Dose ladder

You'll usually start at 2.5 mg for four weeks, then step up if you're tolerating it:

Your clinician will confirm if and when to move up.

Four-dose pens (leftover liquid is normal)

Each pen contains four weekly doses of the labelled strength. A little liquid left after the fourth dose is expected. Don't try to eke out an extra dose. Discard the pen.

Note: If you're using a syringe instead of the pen, see our detailed Mounjaro UK conversion guide that explains how units, mL, and mg relate across all UK pen strengths.

Missed doses & changing your day

• Within 4 days? Take it, then carry on with your usual weekly slot.
• Over 4 days late? Skip it and wait for your normal day.
• Safety gap: never take two doses within three days.

Changing your dose day: you can switch as long as there are at least three days between doses.

Storage and travel

• Store in a fridge (2–8 °C). Don't freeze.
• Pens can be unrefrigerated for up to 21 days if kept below 30 °C and protected from light.

For a Thursday flight to Spain? Use a small cool bag in your hand luggage. Once there, you've got 21 days before you need a fridge again.

A weekly flow that works

Pick a day, say Sunday 19:00, and set the reminder. Log the site so you don't jab the same spot twice. Add a quick note on how you felt. That's it. The app handles snoozes and keeps each week in sync with your calendar.

If you need to see where you are on the dose ladder, or what's next, the dose-ladder view shows your whole timeline. You can attach notes like "nausea score 2/10" or "appetite much lower" for your next clinician review.

Travel across time zones or shift work

When you travel or work shifts, anchor to a consistent weekly day in your local time. Keep at least three days between doses when moving your dose day around.

FAQs

How many doses in a UK pen?

Four. Each pen delivers four weekly doses of the labelled strength. Discard after the fourth dose.

What's the dose ladder?

Typically 2.5 mg for four weeks, then 5, 7.5, 10, 12.5, up to 15 mg once weekly in steps of at least four weeks if tolerated. Follow your clinician's advice.

What if I miss a dose?

Within 4 days, take it as soon as possible. After 4 days, skip it and resume on your usual day. Never take two doses within three days.

Can I change my weekly dose day?

Yes. Keep at least three days between two doses when switching to a new weekly day.

How do I store Mounjaro while travelling?

Keep it refrigerated normally. Pens may be unrefrigerated up to 21 days if kept below 30 °C and protected from light. Do not freeze.

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